Westend Mark II (#983)

* Initial draft

* More work

* Build

* Docs

* Insert westend keys

* Add badBlock to fork from old chain

* Updated spec to reset westend

* Use raw spec

* Fix spec format and use westend2 for both id's

* Correct public key for bootnode 3

* Build

* Extra space

* Fix build

* Lock

* Update lock

* Fixes

* Fix for he startup text

* Bump

Co-authored-by: Gav Wood <gavin@parity.io>

polkadot/cli/src/cli.rs

@@ -55,6 +55,10 @@ pub struct RunCmd {
 	#[structopt(long = "force-kusama")]
 	pub force_kusama: bool,
 
+	/// Force using Westend native runtime.
+	#[structopt(long = "force-westend")]
+	pub force_westend: bool,
+
 	#[allow(missing_docs)]
 	#[structopt(long = "enable-authority-discovery")]
 	pub authority_discovery_enabled: bool,